Bug Description

Right after landing on Ceres with a tier 4 rocket, I placed a celestial gateway to teleport back to my base. Then I returned with a jerry can (which I forgot) and took the remaining fuel out of the landing pod/rocket. I removed the emptied pod/rocket and inspected a radar tower which was right beside my landing spot.

That landing spot consisted of a pneumatic(?) elevator, leading to a higher platform with chests and a radar device on top of it. I shot myself up to the higher platform (NOT using the elevator), emptied the chests and then - out of curiosity - used the elevator to get down again. After succesfully making it to the surface again that way, I wanted to find out which key triggers the elevator to go up.
That's were things became very, very strange.

The elevator didnt move me back up to the higher platform again, but I just jumped with the platform going up and down with me. Not higher than I usually jump on Ceres, I guess. Even when I moved away from the elevator and jumped, the elevator still moved up and down in sync with me.
I decided to quit these experiment and for security reasons wanted to see if i can still teleport back to base by using the celestial gateway. That worked. However when back in base, I noticed that i can't put things from my inventory into containers/boxes. I still could open the boxes, but when I moved an item to a chest, then they only appeared there for a milisecond and then were back in my inventory (as if the client said "i want to..." and the singeplay-"server" said: "nope, you can't").
So i decided to quit back to mainmenu, hoping the restart would reset thing back to normal. But that didn't make a change. Even worse: Out of a sudden, I was able to freely fly around, even through walls and ceilings. So I quit the game again. This time completely restarting CurseForge/SevTech, but that didnt change anything for now.
I am still stuck in that freeflight-mode with the quickbar having changed to some admin-command-mode like "teleport to player", and 3 other commands, which i don't recall at the moment. None of them were executable anyway as it seems.

Now I am stuck in that mode. I suspect the singleplay-"server" to have gone nuts, that my player was maybe deleted(?) or corrupted and so I was thrown into an adminmode which I haven't got the right permission for. No clue, but it seems as if the gamestate is unplayable and I see no way of restoring it beside using a backup.

Did this behavior use to work in the previous version?

Idk.

Steps to Reproduce (for bugs)

Logs

• Client/Server Log:
• Crash Log:

Client Information

• Modpack Version:3.2.3.
• Java Version:
• Launcher Used:CurseForge
• Memory Allocated:7040
• Server/LAN/Single Player:Single Player
• Optifine Installed:No
• Shaders Enabled:No

World Information

• Modpack Version world created in:3.2.3.
• Additional Content Installed:No